Reapply "feat(loyalty): EnakPoint & EnakCoin" (#32)

This reverts commit 4e24f9bbb0.

migrations/000093_add_customer_pin.down.sql

@@ -0,0 +1,9 @@
+DROP TABLE IF EXISTS customer_security_events;
+
+ALTER TABLE customers
+    DROP CONSTRAINT IF EXISTS chk_customers_pin_failed_attempts,
+    DROP COLUMN IF EXISTS transfer_blocked_until,
+    DROP COLUMN IF EXISTS pin_locked_until,
+    DROP COLUMN IF EXISTS pin_failed_attempts,
+    DROP COLUMN IF EXISTS pin_set_at,
+    DROP COLUMN IF EXISTS pin_hash;